The Louvre has these items — the crown and the scepter of Napoleon. That’s the way he wanted them — crude, primitive, archaic to reflect his understanding of the tradition. The hand of justice was copied off an old gravure showing the so called scepter of Charlemagne. This also explains the mirror-image mistake made by the artist who carved the ivory: the hand of justice should be right! The mistake had been pointed out to Napoleon. He shrugged it off — good as is, right or left didn’t matter.